જો $x^y=y^x$ હોય,તો $x(x-y \log x) \frac{d y}{d x}$ ની કિંમત શું થાય?

  • A
    $y(y-x \log y)$
  • B
    $y(y+x \log y)$
  • C
    $x(x+y \log x)$
  • D
    $x(y-x \log y)$

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વિધેય $x^{y} + y^{x} = 1$ માટે $\frac{dy}{dx}$ શોધો.

જો $x e^{xy} = y + \sin^2 x$ હોય,તો $x = 0$ આગળ $\frac{dy}{dx}$ ની કિંમત શોધો.

જો $\cos y = x \cos (a+y)$ અને $\cos a \neq \pm 1$ હોય,તો સાબિત કરો કે $\frac{dy}{dx} = \frac{\cos^2 (a+y)}{\sin a}$.

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જો $2x^2 - 3xy + 4y^2 + 2x - 3y + 4 = 0$ હોય,તો $\left(\frac{dy}{dx}\right)_{(3,2)} = $

જો $\ln (x + y) = 2xy$ હોય,તો $y'(0) =$

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